Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

OCN: 793K TWC IP ENABLED SERVICES, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
940-386 9 Wichita Falls TX   548   2011-03-21   
940-500 A Wichita Falls TX   548      
940-500 4 Wichita Falls TX   548   2011-01-09   
940-526 1 Justin TX   552   2023-08-27   
940-538 7 Henrietta TX   548   2022-02-27   
940-613 0 Wichita Falls TX   548      
945-205 3 Blue Ridge TX   552   2022-05-15   
945-285 1 Kaufman TX   552   2025-03-23   
945-302 3 Ferris TX   552   2024-06-09   
945-667 1 Rockwall TX   552   2023-06-04   
945-745 3 Royse City TX   552   2022-06-26   
956-205 2 Mission TX   568   2006-10-17   
956-223 A Pharr TX HRLNTXHGXYX  568   2025-02-11   
956-223 1 Pharr TX   568   2020-06-14   
956-223 4 Pharr TX   568   2004-03-19   
956-230 A Harlingen TX HRLNTXHGXYX  568   2025-02-11   
956-230 0 Harlingen TX   568      
956-230 1 Harlingen TX   568      
956-230 2 Harlingen TX   568      
956-230 3 Harlingen TX   568      
956-230 4 Harlingen TX   568      
956-230 5 Harlingen TX   568      
956-230 8 Harlingen TX   568   2015-04-13   
956-233 2 Los Fresnos TX   568   2007-06-13   
956-254 2 Los Fresnos TX   568   2011-01-14   
956-255 4 Edcouch TX   568   2017-07-31   
956-258 5 Pharr TX   568   2014-01-16   
956-263 1 Rio Grande City TX   568   2005-08-21   
956-265 9 Zapata TX   568   2011-01-14   
956-267 8 Laredo TX   566   2011-12-30   
956-270 4 Edinburg TX   568   2011-04-25   
956-271 4 Mission TX   568   2008-11-10   
956-276 4 San Benito TX   568   2004-12-13   
956-277 A La Feria TX HRLNTXHGXYX  568   2025-02-11   
956-277 0 La Feria TX   568      
956-280 5 Brownsville TX   568   2011-01-14   
956-287 4 Edinburg TX   568   2004-10-24   
956-291 7 Harlingen TX   568   2016-04-18   
956-294 1 Mercedes TX   568   2011-01-14   
956-299 4 Port Isabel TX   568   2014-11-27   
956-317 1 Rio Grande City TX   568   2011-01-14   
956-322 3 McAllen TX   568   2014-04-26   
956-322 5 McAllen TX   568   2014-07-10   
956-322 8 McAllen TX   568   2015-06-04   
956-327 1 Dolores TX   566   2023-07-17   
956-331 8 McAllen TX   568   2014-12-11   
956-347 4 Lyford TX   568   2007-05-03   
956-348 2 Edinburg TX   568   2017-10-05   
956-348 4 Edinburg TX   568   2018-02-26   
956-348 5 Edinburg TX   568   2018-02-26   
956-351 5 Weslaco TX   568   2007-08-24   
956-352 1 Rio Grande City TX   568   2014-12-30   
956-352 6 Rio Grande City TX   568   2014-07-10   
956-353 6 Roma TX   568   2011-01-14   
956-368 5 Harlingen TX   568   2017-11-01   
956-370 6 Rio Grande City TX   568   2018-10-26   
956-375 2 Weslaco TX   568   2013-06-30   
956-377 5 Donna TX   568   2004-10-24   
956-378 A Edinburg TX HRLNTXHGXYX  568   2025-02-11   
956-378 9 Edinburg TX   568   2013-07-19   
956-386 9 Edinburg TX   568   2011-01-14   
956-398 2 Raymondville TX   568   2011-01-14   
956-405 3 Weslaco TX   568   2017-11-23   
956-420 1 Donna TX   568   2017-09-21   
956-424 6 Mission TX   568   2004-09-17   
956-426 9 Port Isabel TX   568   2017-09-20   
956-433 5 Port Isabel TX   568   2007-03-27   
956-435 9 Brownsville TX   568   2014-06-01   
956-441 A Laredo TX   566      
956-441 0 Laredo TX   566   2015-11-19   
956-441 1 Laredo TX   566   2015-11-19   
956-443 0 Brownsville TX   568   2014-08-25   
956-461 0 Donna TX   568   2011-01-14   
956-461 1 Donna TX   568   2020-04-15   
956-462 5 Laredo TX   566   2011-01-14   
956-475 3 Pharr TX   568   2011-01-14   
956-485 6 Sullivan City TX   568   2007-06-13   
956-496 2 Harlingen TX   568   2015-09-18   
956-502 5 Pharr TX   568   2009-04-02   
956-510 8 Pharr TX   568   2014-11-20   
956-513 1 Edinburg TX   568   2014-11-27   
956-513 8 Edinburg TX   568   2016-03-04   
956-516 4 Laredo TX   566   2016-08-27   
956-516 5 Laredo TX   566   2016-08-27   
956-516 7 Laredo TX   566   2014-10-24   
956-518 7 Brownsville TX   568   2014-01-16   
956-520 7 Weslaco TX   568   2014-12-28   
956-520 8 Weslaco TX   568   2014-11-27   
956-524 8 Port Isabel TX   568   2011-01-14   
956-525 7 Brownsville TX   568   2014-11-24   
956-540 7 McAllen TX   568   2017-08-31   
956-545 A Brownsville TX HRLNTXHGXYX  568   2025-02-11   
956-545 0 Brownsville TX   568   2011-04-23   
956-558 1 McAllen TX   568   2020-10-15   
956-561 4 Brownsville TX   568   2014-11-13   
956-567 2 Edcouch TX   568   2011-01-14   
956-568 A Laredo TX   566      
956-591 A Mission TX HRLNTXHGXYX  568   2025-02-11   
956-591 0 Mission TX   568   2020-11-06   
956-598 5 Mission TX   568   2014-01-18   

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Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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